New report warns that accelerating biodiversity loss will undermine economic performance
Report urges UN to adopt energy efficiency target requiring 2.5 per cent cut in global economy's energy intensity each year
Study says policy environment has improved in many countries since Copenhagen, putting low-carbon economy on track to exceed $2tr mark by 2020
Top executives from some of the world's largest businesses meet in South Korea to reiterate commitment to more sustainable business models
Working group to assess the viability of launching a World Environment Organisation
As Republican senators challenge climate science consensus, UN Secretary General urges leaders to resist climate sceptics' attempts to derail international negotiations
Group representing $13 trillion worth of assets urges leaders to accelerate the rollout of low carbon policies
Flurry of good news dominates start of summit, as South Africa announces emissions target and Obama signals he will attend talks' conclusion
Uncertainty over investing in green technologies more dangerous than lack of Copenhagen treaty says Achim Steiner, the head of the UN environment programme
But renewable energy funding needs to double to $500bn annually to limit global warming, UN study warns